grain size


grain size

[′grān ‚sīz] (geology) Average size of mineral particles composing a rock or sediment. (graphic arts) Average size of silver halide grains in a photosensitive material. (metallurgy) Average size of grains in a metal expressed as average diameter, or grains per unit area or volume.

grain size

A measure of the size of mineral particles of soil or rock; a physical characteristic of the particles of a soil which affects its mechanical properties; used in classification and identification.